2*1=2/2*2=4/2*3=6/2*4=8/2*5=10/2*6=12/2*7=14/2*8=16/2*9=18/3*1=3/3*2=6/3*3=9/3*4=12/3*5=15/3*6=18/3*7=21/3*8=24/3*9=27/4*1=4/4*2=8/4*3=12/4*4=16
당신은 어느 그룹입니까?